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      Dampak Interaksi Atmosfer-Laut MJO Terhadap Sirkulasi di Lintang Tengah dengan Menggunakan Moist Linear Baroclinic Model

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      Date
      2024
      Author
      ARDIANSYAH, M. RODI
      Setiawan, Sonni
      Lubis, Sandro Wellyanto
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      Abstract
      Fenomena MJO mempengaruhi kondisi suhu permukaan laut di tropis. Interaksi dari Atmosfer-laut tersebut mempunyai pengaruh terhadap cuaca di Lintang Tengah melalui dinamika Atmosfer. Simulasi dampak telekoneksi MJO dapat dilakukan dengan menggunakan model linear baroklinik kering dan basah. Penelitian ini bertujuan memahami dampak dan mekanisme telekoneksi dari Interaksi Atmosfer-laut MJO di Sirkulasi lintang Tengah. Penelitian ini juga bertujuan mengevaluasi kemampuan model linear baroklinik basah dalam melakukan simulasi pola telekoneksi MJO dan membandingkannya dengan model linear baroklinik kering. Interaksi Atmosfer-laut MJO dipengaruhi oleh awan konveksi MJO dan pertukaran panas permukaan laut akibat dari aktivitas pergerakan konveksi. Pengaruh MJO terhadap SST mempunyai jeda waktu hingga 10 hari setelah fase MJO aktif terjadi. Simulasi dampak MJO menggunakan model linear baroklinik kering dan basah menunjukkan hasil pola anomali ketinggian geopotensial yang sama. Model basah menunjukkan pola hasil dampak telekoneksi yang mendekati dengan hasil data observasi dibandingkan dengan model kering.
       
      The MJO phenomenon affected tropical sea surface temperature conditions. This atmosphere-ocean relationship has an influence on weather in middle latitudes through atmospheric dynamics. Simulations of the impact of the MJO teleconnection can be carried out using dry and moist linear baroclinic models. This research aims to understand the influence and teleconnection mechanisms of MJO atmosphere-ocean interactions in the mid-latitude circulation. This research also aims to evaluate the ability of the Moist Linear Baroclinic Model (MLBM) in simulating MJO teleconnection patterns and compare it with dry LBM. The MJO atmosphere-ocean interaction is influenced by MJO convection cloud and sea surface heat exchange resulting from convection movement activity. The influence of the MJO on SST has a time lag of up to 10 days after the active MJO phase occurs. Simulations of the MJO impact using the LBM dry and wet models show quite similar geopotential height anomaly patterns. The moist model results have a pattern that is closer to the observation results compared to the dry linear baroclinic model.
       
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      http://repository.ipb.ac.id/handle/123456789/155770
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      • UT - Geophysics and Meteorology [1718]

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      Indonesia DSpace Group 
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